1. A person easily victimized; the victim of a robbery or blackmail. 2. Anyone selected to be victimized by pickpockets or confidence men. 3. A place selected to be robbed. 4. The scar of a knife, usually from cheekbone to mouth, the traditional mark of the informer. "I don't want no part with that joker (fellow). He didn't get that mark on his kisser for being a right ghee (loyal person)." 5. A fool; one incapable of protecting his own interests.

- american underworld dictionary - 1950